Isolationism refers to America's longstanding reluctance to become involved in European alliances and wars. Isolationists held the view that America's perspective on the world was different from that of European societies and that America could advance the cause of freedom and democracy by means other than war.
American isolationism did not mean disengagement from the world stage. Isolationists were not averse to the idea that the United States should be a world player and even further its territorial, ideological and economic interests, particularly in the Western Hemisphere.
http://www.u-s-history.com/pages/h1601.html
This sure sounds like Ron Paul to me.
From your link:
The postwar world environment, in which the United States played a leading role, would change with the triumph of urban industry and finance, expanded education and information systems, advanced military technology, and leadership by internationalists. A few leaders would rise to speak of a return to America's traditional policies of nonintervention, but in reality, traditional American isolationism was obsolete.